CN221087731U - Novel laser ultrasonic wave amplitude threshold value detects welding seam equipment - Google Patents
Novel laser ultrasonic wave amplitude threshold value detects welding seam equipment Download PDFInfo
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- CN221087731U CN221087731U CN202323080186.XU CN202323080186U CN221087731U CN 221087731 U CN221087731 U CN 221087731U CN 202323080186 U CN202323080186 U CN 202323080186U CN 221087731 U CN221087731 U CN 221087731U
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- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 16
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Abstract
The utility model relates to the technical field of weld joint detection, in particular to novel laser ultrasonic wave amplitude threshold detection weld joint equipment. The upper lead screw and the lower lead screw are arranged between the two supporting bodies, the rolling wheel and the conductive welding wheel are arranged on the upper lead screw and the lower lead screw through the sliding blocks, the amplitude threshold laser ultrasonic emission and detection device is arranged on the sliding blocks of the upper lead screw, the two strip steels to be welded are placed on the supporting bodies, the driving motor drives the lead screw to rotate so as to drive the sliding blocks to move, the upper rolling wheel and the lower rolling wheel are in contact with the two strip steels, the conductive welding wheel moves along with the rolling wheel to weld the two strip steels in the moving process of the rolling wheel, the amplitude threshold laser ultrasonic emission and detection device moves along with the conductive welding wheel in the welding process, the detection is realized, the part with the unqualified welding quality can be timely found, the extension of the downtime is avoided, and huge loss is caused.
Description
Technical Field
The utility model relates to the technical field of weld joint detection.
Background
Seamless welding is needed between the steel coils so as to ensure that the plate production line is smoothly and uninterruptedly carried out. Steel coils are usually connected by means of resistance welding (roll welding technique), which is widely used by modern continuous steel production plants to connect the coils in order to maintain production continuity. The welding process can result in rapid and significant metallurgical and thermo-mechanical changes to the substrate, which are as difficult to control accurately as the steelmaking process. In addition, the weld undergoes numerous bending and compression cycles under high line tension, high temperature and corrosive environments, making it the weakest point. Weld failure or weld nugget size failure is a common cause of weld failure, which occurs when the weld interface between two coils is insufficiently fused. The welding quality is not up to standard, can lead to broken belt and force the production line to shut down, if not in time discover and solve, can lead to downtime to lengthen, cause huge loss.
Disclosure of utility model
The utility model provides novel laser ultrasonic amplitude threshold detection welding seam equipment, aiming at solving the technical problems that in the prior art, the welding quality is not up to standard and can cause the extension of the downtime and the huge loss if not found in time.
The technical scheme adopted by the utility model for achieving the purpose is as follows:
Novel laser ultrasonic wave amplitude threshold value detects welding seam equipment, support body 1 one side erection bracing frame 2, install lower supporting seat 3 on the support frame 2, install lower driving motor 22 on the lower supporting seat 3, lower driving motor 22 connects lower lead screw 4, install lower slider 6 on the lower lead screw 4, install lower sliding plate 7 on the lower slider 6, rolling wheel 8 is installed to the one end of lower sliding plate 7, lower conductive welding wheel 9 is installed to the other end of lower sliding plate 7, support body 1 upper portion erection bracing board 11, supporting seat 12 is installed to the backup pad 11 downside, install driving motor 21 on the upper supporting seat 12, go up driving motor 21 and connect last lead screw 24, go up lead screw 24 and lower lead screw 4 parallel, go up slider 14 on the last lead screw 24, install on slider 14 and go up sliding plate 15, go up rolling wheel 16 is installed to the one end of sliding plate 15, go up conductive welding wheel 17 is installed to the other end of sliding plate 15, be located the outside installation amplitude threshold value ultrasonic wave laser emission and detection device 19 of last conductive welding wheel 17.
Support column 10 is installed on support body 1, and backup pad 11 is installed in support column 10 upper end, installs limiting plate 18 on two support columns 10 that lie in front and back homonymy on support body 1, and the lower surface mounting top board 26 of limiting plate 18, the top surface mounting holding down plate 13 of support body 1, has the clearance between top board 26 and the holding down plate 13.
The number of the upper slide block 14 and the lower slide block 6 is two.
The lower guide rod 5 is arranged on the lower support seat 3 in parallel with the lower lead screw 4, the lower slide block 6 is arranged in sliding fit with the lower guide rod 5, the upper guide rod 25 is arranged on the upper support seat 12 in parallel with the upper lead screw 24, and the upper slide block 14 is arranged in sliding fit with the upper guide rod 25.
Compared with the prior art, the utility model has the advantages that:
Two strip steels to be welded are placed on the supporting body, the driving motor drives the screw rod to rotate so as to drive the sliding block to move, the upper rolling wheel and the lower rolling wheel are in contact with the two strip steels, the conductive welding wheel moves along with the rolling wheel to weld the two strip steels in the moving process of the rolling wheel, the amplitude threshold laser ultrasonic wave emission and the detection device move along with the conductive welding wheel in the welding process, the detection is realized while welding, the part with the unqualified welding quality can be found in time, the extension of the downtime is avoided, and huge loss is caused.
Drawings
FIG. 1 is a perspective view of a novel laser ultrasonic amplitude threshold weld inspection apparatus of the present utility model.
FIG. 2 is a side view of a novel laser ultrasonic amplitude threshold weld inspection apparatus of the present utility model.
FIG. 3 is a front view of a novel laser ultrasonic amplitude threshold weld inspection apparatus of the present utility model.
Fig. 4 is a bottom view of a novel laser ultrasonic amplitude threshold detection weld apparatus of the present utility model.
Fig. 5 is a line graph of experimental data for laser ultrasonic waves with an amplitude fluctuation range of 0.05-0.38 at the weld.
Fig. 6 is a line graph of experimental data for laser ultrasonic waves with an amplitude fluctuation range of 0.15 to 0.38 at the weld.
1. A support body; 2. a support frame; 3. a lower support base; 4. a lower lead screw; 5. a lower guide rod; 6. a lower slide block; 7. a lower slide plate; 8. a lower rolling wheel; 9. a lower conductive welding wheel; 10. a support column; 11. a support plate; 12. an upper support base; 13. a lower pressing plate; 14. an upper slider; 15. an upper sliding plate; 16. an upper rolling wheel; 17. a conductive welding wheel is arranged on the upper part; 18. a limiting plate; 19. amplitude threshold laser ultrasonic wave transmitting and detecting device; 20. an electrical control system; 21. an upper driving motor; 22. a lower driving motor; 23. strip steel; 24. a lead screw is arranged; 25. an upper guide rod; 26. and (5) an upper pressing plate.
Detailed Description
The utility model provides novel laser ultrasonic wave amplitude threshold detection welding seam equipment, as shown in figures 1-4, two support bodies 1 are arranged at intervals, a support frame 2 is arranged on one side of each support body 1, a lower support seat 3 is arranged on each support frame 2, a lower driving motor 22 is arranged on each lower support seat 3, the lower driving motor 22 is connected with a lower lead screw 4, a lower guide rod 5 is arranged on each lower support seat 3 in parallel with each lower lead screw 4, a lower slider 6 is arranged on each lower lead screw 4, the lower slider 6 is arranged in sliding fit with each lower guide rod 5, a lower sliding plate 7 is arranged on each lower slider 6, one end of each lower sliding plate 7 is provided with a lower rolling wheel 8, the other end of each lower sliding plate 7 is provided with a lower conductive welding wheel 9, two support columns 10 are respectively arranged at the upper ends of each support body 1, a support plate 11 is arranged at the upper ends of each support column 10, the supporting plate 11 downside is installed and is supported seat 12, go up driving motor 21 on the supporting seat 12, go up driving motor 21 and connect and go up lead screw 24, go up lead screw 24 and lower lead screw 4 parallel, go up on the supporting seat 12 with go up lead screw 24 parallel mount go up guide arm 25, go up slider 14 on the lead screw 24, go up slider 14 and go up guide arm 25 sliding fit and install, go up slider 14 and go up the sliding plate 15 on the slider 14, the quantity of slider 14 and lower slider 6 is two, improve the stability of upper sliding plate 15 and lower sliding plate 7, go up rolling wheel 16 is installed to one end of sliding plate 15, go up the other end of sliding plate 15 and install and lead electric welding wheel 17, go up the outside that lies in last electric welding wheel 17 and install amplitude threshold value laser emission and detection device 19 on the sliding plate 15. Two support columns 10 positioned on the same front and rear sides of the support body 1 are provided with limiting plates 18, the lower surfaces of the limiting plates 18 are provided with upper pressing plates 26, the upper surfaces of the support body 1 are provided with lower pressing plates 13, and a gap exists between the upper pressing plates 26 and the lower pressing plates 13; the amplitude threshold laser ultrasonic wave transmitting and detecting device 19 is connected with an electrical control system 20.
In operation, two strip steels 23 pass through a gap between an upper pressing plate 26 and a lower pressing plate 13 to reach a welding position, an upper driving motor 21 and a lower driving motor 22 are started to respectively drive an upper lead screw 24 and a lower lead screw 4 to rotate, so that an upper sliding block 14 and a lower sliding block 6 move towards the strip steels 23, an upper sliding plate 15 and a lower sliding plate 7 follow the sliding blocks to move towards the strip steels 23, an upper rolling wheel 16 and a lower rolling wheel 8 are in contact with the two strip steels 23 firstly, then an upper conductive welding wheel 17 and a lower conductive welding wheel 9 weld the two strip steels 23, an amplitude threshold laser ultrasonic wave emission and detection device 19 moves along with the conductive welding wheel, and the welding quality is detected in real time in the welding process of the conductive welding wheel, so that the part with the welding quality not reaching standards can be found in time, and huge loss caused by the extension of downtime is avoided.
Amplitude threshold laser ultrasonic wave the ultrasonic wave used by the ultrasonic wave transmitting and detecting device 19 is generated by 9ns,25mj pulse laser. A dedicated Pulse Detection Laser (PDL) generates a peak power of 500W in an 80 μs pulse whose light is split into four fibers (two illumination fibers and two pump fibers) to measure two measurement points simultaneously. The signal amplitude measured before welding is the amplitude transmitted to the welding seam, and then the signal amplitude is compared with the post-welding amplitude, so that the transmitted ultrasonic power, namely the ratio of the post-welding power, is obtained. The reflected light is collected and injected into an optical fiber and then sent to a double wave mixing detection module, which is a photorefractive interferometer, and can measure ultrasonic waves on the metal surface, so that two different data are obtained, and the defect area, the defect range and the defect properties in the metal weld joint are obtained through data conversion.
The welding width of the strip steel is within the linear range of 0-1000 mm, and a continuous rolling welding mode is adopted by the upper rolling wheel 16, the lower rolling wheel 8, the upper conductive welding wheel 17 and the lower conductive welding wheel 19. By adjusting the ratio of the power after welding, the fluctuation range of the amplitude of the laser ultrasonic wave at the welding seam can be seen in different welding seam length intervals.
As shown in the experimental data of FIG. 5, the amplitude ranges from 0.05 to 0.38, and it is evident that there is a significant loss of amplitude between welds 520 to 540, and also between welds 670 to 690, where the post-weld power ratio is 0.
As shown in experimental data of fig. 6, the amplitude is in the range of 0.15-0.38, no obvious amplitude loss exists, the amplitude feedback in the longitudinal direction of the welding seam is clear, no break points or loss exist, namely, the welding materials at the welding seam are well fused, and the signal echo can be continuously received and detected.
Through the experiment, in two defects with the amplitude threshold value of 0, welding materials and base materials are not fully fused, so that air holes or incomplete welding penetration occur in welding meat, and the time position and the size relation of the defects can be judged by comparing length measurement units, so that accurate data judgment and welding quality alarm information are provided for production line operators.
The present utility model has been described in terms of embodiments, and it will be appreciated by those of skill in the art that various changes can be made to the features and embodiments, or equivalents can be substituted, without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. A novel laser ultrasonic wave amplitude threshold value detection welding line device is characterized in that a supporting frame (2) is installed on one side of a supporting body (1), a lower supporting seat (3) is installed on the supporting frame (2), a lower driving motor (22) is installed on the lower supporting seat (3), the lower driving motor (22) is connected with a lower lead screw (4), a lower sliding block (6) is installed on the lower lead screw (4), a lower sliding plate (7) is installed on the lower sliding block (6), a lower rolling wheel (8) is installed at one end of the lower sliding plate (7), a lower conductive welding wheel (9) is installed at the other end of the lower sliding plate (7), a supporting seat (11) is installed on the upper portion of the supporting body (1), an upper supporting seat (12) is installed on the lower side of the supporting plate (11), an upper driving motor (21) is installed on the upper supporting seat (12), an upper lead screw (24) is connected with the upper lead screw (24), the upper lead screw (24) is parallel to the lower lead screw (4), an upper sliding block (14) is installed on the upper sliding block (14), an upper sliding plate (15) is installed on one end of the upper sliding plate (15) is installed, a rolling wheel (16) is installed on one end of the upper sliding plate (15), an amplitude threshold laser ultrasonic wave transmitting and detecting device (19) is arranged on the upper sliding plate (15) and positioned on the outer side of the upper conductive welding wheel (17).
2. The novel laser ultrasonic amplitude threshold detection welding line device according to claim 1, wherein the support body (1) is provided with support columns (10), the support columns (11) are arranged at the upper ends of the support columns (10), two support columns (10) which are positioned on the same side in front and back on the support body (1) are provided with limiting plates (18), the lower surface of each limiting plate (18) is provided with an upper pressing plate (26), the upper surface of the support body (1) is provided with a lower pressing plate (13), and a gap is reserved between each upper pressing plate (26) and each lower pressing plate (13).
3. The novel laser ultrasonic amplitude threshold detection welding line device according to claim 1, wherein the lower support seat (3) is provided with a lower guide rod (5) in parallel with the lower lead screw (4), the lower slider (6) is provided with the lower guide rod (5) in a sliding fit manner, the upper support seat (12) is provided with an upper guide rod (25) in parallel with the upper lead screw (24), and the upper slider (14) is provided with the upper guide rod (25) in a sliding fit manner.
4. The novel laser ultrasonic amplitude threshold detection welding line device according to claim 1, wherein the number of the upper sliding block (14) and the lower sliding block (6) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323080186.XU CN221087731U (en) | 2023-11-15 | 2023-11-15 | Novel laser ultrasonic wave amplitude threshold value detects welding seam equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323080186.XU CN221087731U (en) | 2023-11-15 | 2023-11-15 | Novel laser ultrasonic wave amplitude threshold value detects welding seam equipment |
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| Publication Number | Publication Date |
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| CN221087731U true CN221087731U (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323080186.XU Active CN221087731U (en) | 2023-11-15 | 2023-11-15 | Novel laser ultrasonic wave amplitude threshold value detects welding seam equipment |
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| CN (1) | CN221087731U (en) |
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2023
- 2023-11-15 CN CN202323080186.XU patent/CN221087731U/en active Active
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